Locomotive-smoke-box spark netting



May 20, 1930. w. L. BEAN LOCOMOTIVE SMOKE BQX SPARK NETTING Original Filed June 2. 1925 3 Sheets-Sheet l T May 20-, 1930. w. L. BEAN 1,159,151

LOCOMOTIVE SMOKE BOX SPARK NEITING inal Filed June 2, 1925, 3 Sheets-Sheet 2 1721716774307 wiiamllliean,

May 20, 1930. w. BEAN LQCOMOTIVE SMOKE BOX SPARK NETTING 3 Sheets-Sheet 3 Original Filed June 19,25

lnvew/ioz Z TVEZZZwJa/ mL.Bean

z 'a4 nw J cfli Patented May 20, 1930 TENT FIC i WILLIAM Ii. BEAN, OF WEST'HAVEN, CONNECTICUT LOCOMOTIVE-SMOKE-BOX SPARK-NETTING Original application filed June 2,1925, Serial No. 34,406. Divided land. thisapplication filed pe-1a,

926. 'Serial No. 99,417.

This invention relates to locomotive smoke-box spark nettings. The invention will be best understood by reference :to the following description, when taken in'connec- 5 tion with the accompanying drawings of one specific embodiment thereof, while its scope will be more particularly pointed out in the appended cl-aims.

' In the drawings Fig. 1 is a longitudinal, vertical, sectional view of a locomotive smoke box structure having a spark netting exemplifying the invention; T

'Fig. 2 is a plan of a portion of the-deflector which supports thelower edge of the spark netting; i

Fig. is a sectional view on an enlarged scale on line of Fig. 2;

Fig. 4 is a front elevation of the spark net-- ting 1 the supports for the deflectorand spark net-' ting;

Fig. 10 is a sectional view on line 1010 ofFig.'9;and

Fig. 11 is asectional view on an enlarged scale on line 11-+11 of'Fig. 9. v l l Referring to the drawings, and to the embodiment of the invention which is selected of the sections 29fand 29'.

box and thence in an upwardand rearward direction through'the spark netting into the path-of the exhaust steam toward the stack, willnow be described, reference being had at V lirstto. Fig; 1. V The deflector comprises a rear, generally upright portion, designated generally by the numeral '24, and a lower, generally'liorizontal portion, herein a plate designated generally by the numeral 25. Thisplat'e is convenient'ly supported at both ends by bar's26, suit' ably secured to the circumferential wall of 1 the smoke-box, asbyrivets 27, said-bars presenting inwardly directed flanges .28, T on which the plate rests. The spark netting will now be described,

reference being had at first to Fig. 4,

The netting in the present examplelcomprises left and right portions 29 and '29, a central, upper portion 30, and acentral, lower 0 portion31, the latterconstituting a The sections 29 and 29" lie in one plane, while the section 30 lies in a plane parallel thereto,

and has margins which overlie the margins Thisis clearly apparent from an inspection of Fig. 6, where in the overlying margins of the sections 29 and 30 are received in oppositely'facing grooves 32 and 33, presented by a bar 34. This bar may be secured to the section 29, as by welding at 35. V A similar bar 34, arranged in like manner, connects the overlying edges of the section 30 and the section 29. This construction provides a joint, which prevents any possibility of sparks passing through the joint, while at the same time, it permits the intermediate section 30 to beremoved quickly and conveniently by sliding the same in a downward direction out of the grooves presented by the bars. 7

The section 31 in the present example-lies in the same plane as the section 30, and has 'margms wh1ch overlle corresponding margins of the sections 29 and 29, as will be evident from an examination of Fig. .8, These overlying margins are conveniently secured to each other, as by pins 36, extending through the overlying margins, and riveted to a bar 37, which is secured to the section 29 as by Welding- Each P Projects through the door section 31, and is provided with a washer 39, which cooperates with a locking in to hold the door section in place. imilar fastenings secure the door section to the section 29.

The door section 31 lies in the same plane as the section 30. This is well illustrated in Fig. 7 which shows these two sections presented edge to edge. These edges are suitably secured to each other, as by pins 41, which extend through the section 31, and are riveted to a bar 42, suitably secured as by welding at 43 to the section 30. Washers 44L encircling the pins 41 are heldin place by keys 45, extending through the pins 41.

The spark netting sections 29, 29 and 30, together, present a circular margin, which is received in a groove 46, (see Fig. 9), provided in a bar 17 conveniently secured to the circumferential wall of the smoke-box, as by rivets 4E8. Inasmuch as the intermediate section 30 of the spark netting lies in a different plane from the sections 29 and 30, the groove 46 is provided with an offset portion 49 (see Fig. 10). The described construction therefore provides a tongue and groove joint, having the advantage that it prevents the escape of sparks, yet it does not call for the use of bolts to draw the joint together to make it tight. Moreover, the sections 29, 29 and 30 of the spark netting can be inserted into and withdrawn from the groove 46 very conveniently.

The lower margins of the sections 29 and 29, as well as the lower margin of the section 31, are received in a groove 50 (see Figs. 2 and 3) between angle bars 51 and 52, secured to the plate 25. Inasmuch as the lower section 31 lies in a different plane from the sections 29 and 29, this groove has an offset portion 53 (see Fig. 2), to receive the door section.

The spark netting structure, as thus far described, has its marginal portion throughout received in grooves, which securely hold it in place, but to prevent any possibility of the front edge of the plate 25 sagging or warping, due to its exposure to the hot gases, the spark netting may be used as a means of sup port for the plate. To this end, the upper corners of the spark netting sections 29 and 29 are secured in the groove 46 of the bar 47 by pins 54, and the intermediate section is secured by a pin 55 (see Fig. 5), while the lower corners of the plates 29 and 29 are secured to the bars 51 and 52 by pins 56. Thus ,it is evident that there is no possibility of warping of the parts, which might permit sparks to pass through the joint, while at the same time, the assemblage is such that the door section of the spark netting can be removed with great facility, and if desirable, the remaining sections can be removed and replaced with equal ease.

This application is a division of my pendin a plane parallel to the other two, and two bars each presenting two oppositely facing grooves which receive adjacent margins of said third section and one of said two sections.

2. In a smoke-box structure, a spark-netting, comprising two sections which lie in a common plane and a third section having two margins which overlie margins of said two sections, two bars each presenting two oppositely facing grooves which receive two of said overlying margins, and a fourth section having two margins which overlie said two sections, respectively, and a third margin which is presented edge to edge with a margin of said third section.

3. In a smoke-box structure, a spark-netting, comprising two sections which lie in a common plane, a third section having two margins which overlie margins of said two sections, two bars each presenting two oppositely facing grooves which receive two of said overlying margins, and a fourth section having two margins which overlie said two sections, respectively, a thirl margin which is presented edge to edge with a margin of said third section, and a bar which overlies said edges.

4. In a smoke-box structure, a spark-netting, comprising three sections one of which is intermediate the other two, and two bars connecting said sections each of which bars comprises elements providing two oppositely facing grooves, one of which grooves receives an edge of said intermediate section, and the other of which grooves receives the adjacent edge of one of the other sections.

5. In a smoke-box structure, a spark-netting, comprising three sections one of which is intermediate the other two, two bars each of which has two oppositely facing grooves, one of which grooves receives an edge of said intermediate section, and the other of which grooves receives the adjacent edge of one of the other sections, and a fourth section normally preventing removal of said intermediate section by movement lengthwise of the grooves in which its said edges are received.

6. In a smoke-box structure, a spark-netting, comprising three sections, one of which is intermediate the other two and has opposite converging edges, and two bars each of which comprises elements providing two oppositely facing grooves, one of which grooves receives one of said opposite edges,

and the other of which grooves receives the adjacent edge of one of the other sections.

7. In a smoke-box structure,.a deflector, P

and a spark-netting comprising two sections which lie in a common plane and a third section which lies in a parallel planeysaid deflector and sections having tongue and groove connection with each other comprising bars secured to said deflector and providing a groove which receives said netting sections. 8. In a smoke-box structure, a spark-netting comprising two spaced sections which will liein a] common plane and a third-section between said spaced sections and lying in a parallel plane, said sections having elements cooperating to form a substantially continuous edge for said netting with an intermediate portion offset from the end portions, and means for mounting said sections in the smoke-box which means presents a correspondingly ofiset groove for receiving said elements.

In testimony whereof, I have signed my name to this specification.

WILLIAM L. BEAN. 

